How to create custom chart

You can make custom chart using iframe. You have to select data before using this feature.

<div id='container'>
  Loading...
</div>
<script defer>
  function render(data){
    document.getElementById('container').innerHTML = data.rows[0].toString();
  }
  (function(){
    window.addEventListener("message", (event)=>{
      if(event.data && event.data.type === "IFRAME_DATA_RES"){
        render(event.data);
      }
    });
    
    //window.parent.postMessage("IFRAME_DATA_REQ,D7sRjaQRr2yo3zvoL");
    window.parent.postMessage("IFRAME_DATA_REQ,__IFRAME_ID_HERE__");
  })();
</script>

info

change ID to your iframe id